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细菌粘附和颗粒填充和短纤维增强复合材料的表面粗
L Lassila1, V Loimaranta1, P K Vallittu1,2
1Department of Biomaterials Science and Turku Clinical Biomaterial Center, TCBC, Institute of Dentistry, University of Turku, Turku, Finland.
Odontology
|September 24, 2024
概括
填充颗粒物和增强短纤维的复合材料显示了类似的Streptococcus mutans粘附. 浮式SFRC的表面粗度最低,而CeramX和everX Posterior的表面粗度最高.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 微生物学 微生物学
背景情况:
- 牙科复合材料是广泛使用的修复材料.
- 了解细菌粘附和表面特性对于防止二次和材料降解至关重要.
- 短纤维增强复合材料 (SFRCs) 与传统颗粒物填充复合材料 (PFCs) 相比,具有潜在的机械优势.
研究的目的:
- 评估和比较各种PFC和SFRC牙科材料中Streptococcus mutans (S. mutans) 的初始粘附度和表面粗度 (Ra).
- 为了确定复合材料中短微纤维的含有是否会影响细菌粘附或表面特征.
主要方法:
- 测试了五个PFC和四个SFRC.
- 表面粗度 (Ra) 在抛光后使用3D轮计进行测量.
- 通过在化后量化殖民地形成单位 (CFU) 来评估S. mutans的细菌粘附,并使用SEM进行可视化.
主要成果:
- 所有测试的PFC和SFRC复合材料都表现出类似的初始S. mutans粘附.
- 流动式SFRC (everX流量批量和Dentin) 呈现了最低的表面粗度 (0.26微米).
- 陶X和everX后面显示了最高的表面粗度 (0.42微米),实验SFRC与商业复合材料相比.
结论:
- 复合材料中短微纤维的存在不会对最初的细菌粘附或表面粗性产生不利影响.
- 材料类型影响表面粗度,可流动的SFRC显示更光滑的表面.
- 无论是PFC还是SFRC,都表现出对最初的S. mutans粘附的可比敏感性.
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